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there are a few types of flourescent lights, also leds, high pressure sodiums, and metal halides. flourescents are the best bang for your buck as they are cheaper and more energy efficient. high pressure sodiums and metal halides put out more lumens per wattage, but also use more energy and put out more heat. led lights are fairly new as grow lights, and all i know about them is that they last a really long time. it also depends on what your growing and how much.

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17y ago

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